Haha, well with this WCC it's gone one of two ways: sexual or murder. You're clearly in the latter category... the lattergory. Oh dear.

Overall it seemed solid, though... I don't know - there was no real atmosphere or menace in what should be quite a chilling subject. There was also the fact that you overused the word dirt: [Dirtied stone walls. Smeared with dirt, or blood, or both. Katherine shuddered. She was lying on a table of stone. Blood and dirt surrounded her figure,]

And I cannot find the example now, but I think there was also another instance where you kept saying skin. Rewording these sentences would probably be the easiest way to fix this, as most of the time clunky synonyms don't quite work.

Overall I think a good idea, and mostly good execution was spoilt by some clumsy phrasing "fear-fettered throat." The high point for me though was on the re-read - the opening section acting like an almost shakespearean opening sonnet, detailing the events of the story and yet we still find the ending unexpected.